PINPOINT TEST A : The Power Liftgate Is Inoperative

A1 CHECK THE OPERATION OF THE POWER LIFTGATE SWITCHES

Vehicle in park.

Close the liftgate to the full closed position (manually, if necessary).

Activate the power liftgate from the power liftgate control switch (instrument panel).

Activate the power liftgate from an RKE transmitter.

Activate the power liftgate from the exterior liftgate switch.

Does the power liftgate power open from any switch?

Yes	GO to Pinpoint Test B .
No	GO to A2.

A2 RETRIEVE THE DTCs FROM THE LTM

Retrieve the recorded LTM DTCs from the self-test.

Are any LTM DTCs recorded?

Yes	For DTC B2552, GO to A3. For DTC B1179, B117A, B117B, B2936, B2819 or B2937, GO to A7. For all other LTM DTCs, Refer to the LTM DTC Chart .
No	GO to A3.

A3 CHECK FOR VOLTAGE TO THE LTM

Ignition OFF.

Disconnect: LTM C4174A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4174A-9	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-4	Courtesy of FORD MOTOR COMPANY	Ground

Are the voltages greater than 11 volts?

Yes	GO to A4.
No	VERIFY BCM fuse 9 (10A) or the BJB fuse 7 (30A) is OK. If OK, REPAIR the circuit in question for an open. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short.

A4 CHECK THE LTM GROUND FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4174A-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	RECONNECT the LTM and GO to A5.
No	REPAIR the circuit.

A5 CHECK THE DETENT AND FORKBOLT SWITCH PIDs

Using a scan tool, view the LTM PIDs.

Operate the liftgate manually while monitoring the LTM PIDs :
- Detent Switch Status (DETENTSW)
- Forkbolt Switch Status (FORKBLT_S)
- Forkbolt Secondary Switch (FKSWSEC)

Begin with the liftgate in the open position, then slowly close the liftgate into each of the latch positions specified.

Liftgate Latch Position	DETENTSW	FORKBLT_S	FKSWSEC
Fully unlatched	Inactive	Active	Active
Primary	Active	Inactive	Inactive

Do the switch states agree with the table?

Yes	GO to A6.
No	GO to Pinpoint Test L .

A6 CHECK THE OPTICAL SENSOR 1 (OPT_SEN_1) AND 2 (OPT_SEN_2) STATUS PIDs

Open the liftgate to the full OPEN position.

Using the scan tool, view LTM PIDs.

Monitor the LTM PIDs OPT_SEN_1 and OPT_SEN_2 while slowly closing the liftgate.

Do both of the PID values alternate from ACTIVE to INACTIVE while the liftgate is moving?

Yes	GO to A7.
No	GO to Pinpoint Test K .

A7 CHECK THE MOTOR AND LATCH CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: LTM C4174A.

Disconnect: Power Liftgate Motor.

Disconnect: Power Liftgate Latch.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4174A-2	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-3	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-5	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-6	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit in question.
No	GO to A8.

A8 CHECK THE MOTOR AND LATCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4174A-2	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-3	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-5	Courtesy of FORD MOTOR COMPANY	Ground
C4174A-6	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes	GO to A9.
No	REPAIR the circuit in question.

A9 CHECK THE MOTOR AND LATCH CIRCUITS FOR AN OPEN

For the power liftgate motor, measure:

Positive Lead	Measurement / Action	Negative Lead
C4174A-5	Courtesy of FORD MOTOR COMPANY	C4223-1
C4174A-6	Courtesy of FORD MOTOR COMPANY	C4223-4

For the power liftgate latch, measure:

Positive Lead	Measurement / Action	Negative Lead
C4174A-2	Courtesy of FORD MOTOR COMPANY	C4819-5
C4174A-3	Courtesy of FORD MOTOR COMPANY	C4819-7

Are the resistances less than 3 ohms?

Yes	GO to A10.
No	REPAIR the circuit in question.

A10 CHECK THE UNLATCH OPERATION

Connect: Power Liftgate Latch.

Close and latch the liftgate.

Momentarily connect a fused jumper wire:

Positive Lead	Measurement / Action	Negative Lead
C4174A-3	Courtesy of FORD MOTOR COMPANY	C4174A-4
C4174A-2	Courtesy of FORD MOTOR COMPANY	C4174A-1

Does the unlatch/cinching motor activate?

Yes	LEAVE the liftgate unlatched, GO to A11.
No	INSTALL a new power liftgate latch. REFER to Handles, Locks, Latches and Entry Systems With Intelligent Access (IA) .

A11 CHECK THE POWER LIFTGATE MOTOR OPERATION

Connect: Power Liftgate Motor.

Place the liftgate in the fully closed and unlatched position.

Momentarily connect a fused jumper wire:

Positive Lead	Measurement / Action	Negative Lead
C4174A-5	Courtesy of FORD MOTOR COMPANY	C4174A-4
C4174A-6	Courtesy of FORD MOTOR COMPANY	C4174A-1

Does the power liftgate motor operate?

Yes	GO to A12.
No	INSTALL a new power liftgate motor. Refer to Power Liftgate Motor .

A12 CHECK FOR CORRECT LTM OPERATION

Ignition OFF.

Disconnect and inspect all LTM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect all the LTM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new LTM. Refer to Liftgate/Trunk Module (LTM) .
No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.